Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Physical parameterization of Strombolian eruptions via experimentally-validated modeling of high-speed observations
AU - Taddeucci, Jacopo
AU - Alatorre-Ibarguengoitia, Miguel
AU - Moroni, Monica
AU - Tornetta, Lauretta
AU - Capponi, Antonio
AU - Scarlato, Piergiorgio
AU - Dingwell, Donald
AU - De Rita, Donatella
PY - 2012/8/23
Y1 - 2012/8/23
N2 - Pressurized gas drives explosive volcanic eruptions.Existing models can predict the amount and pressure of gas in erupting magma, but application and testing of such models is currently limited by the accuracy of input parameters from natural systems. Here, we present a new methodology,based on a novel integration of 1) high-speed imaging and 2) shock-tube modeling of volcanic activity in order to derive estimates of sub-second variations in the pressure, mass, and volume of gas that drive the dynamics of unsteadyeruptions. First, we validate the method against laboratoryscale shock-tube experiments. Having validated the method we then apply it to observations of eruptions at Stromboli volcano (Italy). Finally, we use those results for a parametric study of the weight of input parameters on final outputs. Weconclude that Strombolian explosions, with durations of seconds, result from discrete releases of gas with mass and pressure in the 4–714 kg and 0.10–0.56 MPa range, respectively, and which occupy the volcano conduit to a depth of4–190 m. These variations are present both among and within individual explosions
AB - Pressurized gas drives explosive volcanic eruptions.Existing models can predict the amount and pressure of gas in erupting magma, but application and testing of such models is currently limited by the accuracy of input parameters from natural systems. Here, we present a new methodology,based on a novel integration of 1) high-speed imaging and 2) shock-tube modeling of volcanic activity in order to derive estimates of sub-second variations in the pressure, mass, and volume of gas that drive the dynamics of unsteadyeruptions. First, we validate the method against laboratoryscale shock-tube experiments. Having validated the method we then apply it to observations of eruptions at Stromboli volcano (Italy). Finally, we use those results for a parametric study of the weight of input parameters on final outputs. Weconclude that Strombolian explosions, with durations of seconds, result from discrete releases of gas with mass and pressure in the 4–714 kg and 0.10–0.56 MPa range, respectively, and which occupy the volcano conduit to a depth of4–190 m. These variations are present both among and within individual explosions
U2 - 10.1029/2012GL052772
DO - 10.1029/2012GL052772
M3 - Journal article
VL - 39
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 16
M1 - L16306
ER -